package com.github.roc.security.web.controller;

import com.github.roc.security.web.support.SimpleResponse;
import org.apache.commons.lang.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.security.web.DefaultRedirectStrategy;
import org.springframework.security.web.RedirectStrategy;
import org.springframework.security.web.savedrequest.HttpSessionRequestCache;
import org.springframework.security.web.savedrequest.RequestCache;
import org.springframework.security.web.savedrequest.SavedRequest;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@RestController
public class BrowserSecurityController {
  private Logger logger = LoggerFactory.getLogger(getClass());
  private RequestCache requestCache = new HttpSessionRequestCache();
  private RedirectStrategy redirectStrategy = new DefaultRedirectStrategy();

  @RequestMapping("/authentication/require")
  public SimpleResponse requireAuthentication(HttpServletRequest request, HttpServletResponse response) throws IOException {
    SavedRequest savedRequest = requestCache.getRequest(request, response);

    if (savedRequest != null) {
      String targetUrl = savedRequest.getRedirectUrl();
      logger.info("引发跳转的请求是:" + targetUrl);
      if (StringUtils.endsWithIgnoreCase(targetUrl, ".html")) {
        redirectStrategy.sendRedirect(request, response, "login.html");
      }
    }

    return new SimpleResponse("访问的服务需要身份认证，请引导用户到登录页");
  }
}
